R 1/2 thread dimensions

Standard

ISO 7-1 (BSPT)

Form

Taper 1:16

Major diameter

20.955 mm

Threads per inch

14

Pitch

1.814 mm

Flank angle

55°

Seals on

Thread + sealant

Used for

Process connections

For taper threads the diameter is the nominal pipe outside diameter used for identification; the thread diameter changes along the length at a taper of 1:16.

Check a measurement against this thread